Aoki, S., Hirai, S., Saechout, V., Kohmura, M., Nishimura, T., & Hiroi, T. (2007). Development for Automatic Welding System with Reduction of Residual Stress. - Effect of Vibrations with Different Frequencies. Elektronika Ir Elektrotechnika, 76(4), 21-24. https://doi.org/10.5755/j02.eie.10709